What type of software application interacts with users through natural language, either via text or voice?

The chosen answer, a chatbot, is indeed the correct option when considering software applications that engage users through natural language, whether in text or voice formats. Chatbots are specifically designed to simulate conversations with human users. They can understand and respond to natural language inputs, making them suitable for a wide range of applications, such as customer service, virtual support, and personal assistance.

While virtual assistants also interact with users using natural language, they often have broader functionalities that extend beyond just conversational interactions. Virtual assistants handle tasks such as setting reminders, playing music, or managing smart home devices, whereas chatbots are typically focused on specific conversational tasks within predefined contexts.

Web scrapers, on the other hand, are tools used for extracting data from websites. They do not engage in conversation or interact with users through natural language, which clearly distinguishes them from chatbots and virtual assistants.

Data visualizers are applications that display data in various visual formats to help users understand complex information more easily. They do not interact with users through natural language, as their primary function is to present data visually rather than engage in dialogue.

Therefore, the defining characteristic of chatbots as software that specifically engages in conversation using natural language makes this answer the most appropriate choice for the given question.